EP3633245B1 - Dichtungsvorrichtung - Google Patents

Dichtungsvorrichtung Download PDF

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Publication number
EP3633245B1
EP3633245B1 EP18809887.5A EP18809887A EP3633245B1 EP 3633245 B1 EP3633245 B1 EP 3633245B1 EP 18809887 A EP18809887 A EP 18809887A EP 3633245 B1 EP3633245 B1 EP 3633245B1
Authority
EP
European Patent Office
Prior art keywords
slinger
grooves
sealing apparatus
lip
outer periphery
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18809887.5A
Other languages
English (en)
French (fr)
Other versions
EP3633245A1 (de
EP3633245A4 (de
Inventor
Sosuke Ito
Masahiko Inoue
Hisato Yonai
Yuya Sakano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nok Corp
Original Assignee
Nok Corp
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Filing date
Publication date
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Publication of EP3633245A1 publication Critical patent/EP3633245A1/de
Publication of EP3633245A4 publication Critical patent/EP3633245A4/de
Application granted granted Critical
Publication of EP3633245B1 publication Critical patent/EP3633245B1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3244—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with hydrodynamic pumping action
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3248—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports
    • F16J15/3252—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports
    • F16J15/3256—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings provided with casings or supports with rigid casings or supports comprising two casing or support elements, one attached to each surface, e.g. cartridge or cassette seals

Definitions

  • the present invention relates to a sealing apparatus to realize sealing between a shaft and a hole into which this shaft is to be inserted.
  • a sealing apparatus In a vehicle, general-purpose machine, or the like, in order to prevent leakage of a target to be sealed such as, for example, a lubricant, and in order to seal a gap between a shaft and a hole into which this shaft is to be inserted, a sealing apparatus has been conventionally used.
  • sealing between the shaft and the sealing apparatus is realized by a seal lip being brought into contact with the shaft or an annular member attached to the shaft.
  • the end-face contact-type sealing apparatus prevents leakage of a target to be sealed by bringing a seal lip extending along a shaft into contact with a slinger attached to the shaft.
  • the present invention has been made in view of the above-described problem, and it is an object of the present invention to provide a sealing apparatus which can prevent static leakage of a target to be sealed without increasing sliding resistance with respect to a shaft.
  • the slinger has a plurality of shallow grooves.
  • a depth of each of the grooves is equal to or less than 10 ⁇ m.
  • the groove intersects with a portion where the seal lip contacts.
  • a sealing apparatus According to a sealing apparatus according to the present invention, it is possible to prevent static leakage of a target to be sealed without increasing sliding resistance with respect to a shaft.
  • Fig. 1 is a cross-sectional diagram on a cross-section along an axis line x for illustrating a schematic configuration of a sealing apparatus 1 according to an embodiment of the present invention
  • Fig. 2 is a partially enlarged cross-sectional diagram illustrating enlarged part of the cross-section along the axis line x of the sealing apparatus 1 according to the embodiment of the present invention.
  • the sealing apparatus 1 is a sealing apparatus for sealing an annular gap between a shaft and a hole into which this shaft is to be inserted, and is used to seal a gap between a shaft and a hole (shaft hole) which is formed at a housing, or the like, and into which this shaft is to be inserted in a vehicle or general-purpose machine.
  • the sealing apparatus is used to seal annular space between a crank shaft of an engine and a crank hole which is a shaft hole formed at a front cover or a cylinder block and a crank case.
  • targets to which the sealing apparatus 1 according to the embodiment of the present invention is applied are not limited to the above.
  • a direction of an arrow a in the direction of the axial direction x (one side in the axis line direction) is set as an inner side
  • a direction of an arrow b in the axis line x direction (another side in the axis line direction) is set as an outer side
  • the inner side is a side of space to be sealed (side of a target to be sealed) and a side of space where a target to be sealed such as a lubricant exists
  • the outer side is an opposite side of the inner side.
  • a direction away from the axis line x (a direction of an arrow c in Fig. 1 ) is set as an outer periphery side
  • a direction approaching the axis line x (a direction of an arrow d in Fig. 1 ) is set as an inner periphery side.
  • the sealing apparatus 1 includes a sealing apparatus body 2 fitted into a hole as an attachment target which will be described later and a slinger 3 attached to a shaft as an attachment target which will be described later.
  • the sealing apparatus body 2 includes a reinforcing ring 10 which is annular around the axis line x, and an elastic body portion 20 which is formed with an elastic body attached to the reinforcing ring 10, and which is annular around the axis line x.
  • the slinger 3 includes a flange portion 31 which is a portion extending toward the outer periphery side (the direction of the arrow c) and annular around the axis line x.
  • the elastic body portion 20 includes an end-face lip 21 which is a lip extending toward one side (inner side, the direction of the arrow a) in the axis line x direction, contacting a surface (outer side surface 31d) of the flange portion 31 on the other side (outer side, a side of the direction of the arrow b) in the axis line direction x and which is annular around the axis line x.
  • At least one shallow groove 33 is formed on the outer side surface 31d of the flange portion 31 of the slinger 3.
  • the reinforcing ring 10 is an annular metal member which is centered on or substantially centered on the axis line x and is formed so that the sealing apparatus body 2 is pressed, engaged and fitted into a shaft hole of a housing which will be described later.
  • the reinforcing ring 10 includes, for example, a cylindrical portion 11 which is a cylindrical portion located on the outer periphery side, a disk portion 12 which is a hollow disk-shaped portion extending from a tip portion on the outer side of the cylindrical portion 11 to the inner periphery side, a conical ring portion 13 which is a conical cylindrical annular portion extending from a tip portion on the inner periphery side of the disk portion 12 to the inner side and the inner periphery side, and a disk portion 14 which is a hollow disk-shaped portion extending in the radial direction from a tip portion on the inner side or the inner periphery side of the conical ring portion 13 to the inner periphery side and reaching a tip portion on the inner periphery side of the reinforcing ring 10.
  • the cylindrical portion 11 of the reinforcing ring 10 includes an outer periphery side cylindrical portion 11a which is a cylindrical or substantially cylindrical portion located on the outer periphery side, an inner periphery side cylindrical portion 11b which is a cylindrical or substantially cylindrical portion extending on the outer side and the inner periphery side of the outer periphery side cylindrical portion 11a, and a connecting portion 11c which is a portion connecting the outer periphery side cylindrical portion 11a and the inner periphery side cylindrical portion 11b.
  • the outer periphery side cylindrical portion 11a of the cylindrical portion 11 is fitted into the shaft hole 51 so that, when the sealing apparatus body 2 is fitted into the shaft hole 51 of the housing 50 ( Fig.
  • the axis line x of the sealing apparatus body 2 matches an axis line of the shaft hole 51.
  • the elastic body portion 20 is attached to the reinforcing ring 10 from a substantially outer periphery side and the outer side, so as to reinforce the elastic body portion 20 with the reinforcing ring 10.
  • the elastic body portion 20 includes a base portion 25 which is a portion attached to a tip portion on the inner periphery side of the disk portion 14 of the reinforcing ring 10, a gasket portion 26 which is a portion attached to the cylindrical portion 11 of the reinforcing ring 10 from the outer periphery side, and a rear cover portion 27 which is a portion attached to the reinforcing ring 10 between the base portion 25 and the gasket portion 26 from the outer side. More specifically, as illustrated in Fig. 2 , the gasket portion 26 is attached to the inner periphery side cylindrical portion 11b of the cylindrical portion 11 of the reinforcing ring 10.
  • an outer diameter of the gasket portion 26 is greater than a diameter of an inner periphery surface 51a (see Fig. 5 ) of the shaft hole 51 which will be described later. Therefore, in the case where the sealing apparatus body 2 is fitted into the shaft hole 51 which will be described later, the gasket portion 26 is compressed in the radial direction between the inner periphery side cylindrical portion 11b of the reinforcing ring 10 and the shaft hole 51 and seals a gap between the shaft hole 51 and the inner periphery side cylindrical portion 11b of the reinforcing ring 10. By this means, space between the sealing apparatus body 2 and the shaft hole 51 is sealed.
  • the gasket portion 26 does not have to be have an outer diameter greater than the diameter of the inner periphery surface of the shaft hole 51 over the whole axis line x direction, and may have the outer diameter partially greater than the diameter of the inner periphery surface of the shaft hole 51.
  • an annular convex portion whose tip has a diameter greater than the diameter of the inner periphery surface 51a of the shaft hole 51 may be formed on a surface on the outer periphery side of the gasket portion 26.
  • the end-face lip 21 extends from the base portion 25 to the inner side (direction of the arrow a) in an annular shape centered on or substantially centered on the axis line x.
  • the end-face lip 21 is formed so that a slinger contact portion 23 on an inner periphery surface 22, which is a surface of the end-face lip 21 on the inner periphery side, contacts the flange portion 31 of the slinger 3 from the outer side with a predetermined interference, in a usage state where the sealing apparatus 1 is attached at a desired position in the attachment target.
  • the end-face lip 21 has, for example, a conical cylindrical shape whose diameter becomes greater toward the inner side (direction of the arrow a) in the axis line x direction. That is, as illustrated in Fig. 1 and Fig. 2 , the end-face lip 21 extends obliquely with respect to the axis line x from the base portion 25 to the inner side and the outer periphery side on a cross-section along the axis line x (hereinafter, also simply referred to as a "cross-section").
  • the elastic body portion 20 includes a dust lip 28 and an intermediate lip 29.
  • the dust lip 28 is a lip extending from the base portion 25 toward the axis line x, extends from the base portion 25 in an annular shape centered on or substantially centered on the axis line x, and is formed so that, in the usage state of the sealing apparatus 1 which will be described later, a tip portion contacts the slinger 3 from the outer periphery side with a predetermined interference.
  • the dust lip 28 has, for example, a conical cylindrical shape whose diameter becomes smaller toward the outer side (direction of the arrow b) in the axis line x direction.
  • the dust lip 28 prevents a foreign matter such as dust and moisture from intruding inside of the sealing apparatus 1 from the outer side which is the opposite side of the side of the target to be sealed in the usage state.
  • the dust lip 28 may be formed so as not to contact the slinger 3 in the usage state of the sealing apparatus 1.
  • the intermediate lip 29, which is a lip extending from the base portion 25 toward the inner side to have a substantially L shape in cross section, extends from the base portion 25 in an annular shape centered on or substantially centered on the axis line x direction, and forms an annular concave portion which opens toward the inner side between the intermediate lip 29 and the base portion 25.
  • the intermediate lip 29 does not contact the slinger 3 in the usage state of the sealing apparatus 1.
  • the intermediate lip 29 is formed to, in the usage state, in the case where a target to be sealed oozes inside over the slinger contact portion 23 where the end-face lip 21 contacts the slinger 3, prevent this target to be sealed which has oozed from leaking out on the dust lip 28 side.
  • the intermediate lip 29 may have other shapes, and may, for example, have a conical cylindrical shape whose diameter becomes smaller toward the inner side in the axis line x direction.
  • the intermediate lip 29 may be formed so that a tip of the intermediate lip 29 contacts the slinger 3.
  • the elastic body portion 20 includes the end-face lip 21, the base portion 25, the gasket portion 26, the rear cover portion 27, the dust lip 28 and the intermediate lip 29, respective portions are integrated, and the elastic body portion 20 is integrally formed with the same material.
  • the shape of the elastic body portion 20 is not limited to the above-described shape, and may be various shapes in accordance with application targets.
  • the above-described reinforcing ring 10 is formed with a metal material, and examples of this metal material can include, for example, stainless steel and SPCC (cold rolled steel sheet).
  • examples of the elastic body of the elastic body portion 20 can include, for example, various kinds of rubber materials.
  • the various kinds of rubber materials can include, for example, synthetic rubber such as nitrile rubber (NBR), hydrogenated nitrile rubber (H-NBR), acryl rubber (ACM) and fluorine-containing rubber (FKM).
  • the reinforcing ring 10 is manufactured through, for example, press work or forging, and the elastic body portion 20 is molded through cross-linking (vulcanization) molding using a mold. Upon this cross-linking molding, the reinforcing ring 10 is disposed in the mold, the elastic body portion 20 is adhered to the reinforcing ring 10 through cross-linking adhesion, and the elastic body portion 20 and the reinforcing ring 10 are integrally molded.
  • the slinger 3 is an annular member attached to the shaft in the usage state of the sealing apparatus 1 which will be described later, and is an annular member centered on or substantially centered on the axis line x.
  • the slinger 3 has a cross-section having a substantially L shape, and includes the flange portion 31 and the cylindrical or substantially cylindrical tubular portion 34 which is connected to an end portion on the inner periphery side of the flange portion 31 and which extends in the axis line x direction.
  • the flange portion 31 specifically includes an inner periphery side disk portion 31a having a hollow disk shape or a substantially hollow disk shape extending from the tubular portion 34 in the radial direction, an outer periphery side disk portion 31b in a hollow disk shape or a substantially hollow disk shape which expands on the outer periphery side of the inner periphery side disk portion 31a and which extends in the radial direction, and a connecting portion 31c which connects an end portion on the outer periphery side of the inner periphery side disk portion 31a and an end portion on the inner periphery side of the outer periphery side disk portion 31b.
  • the outer periphery side disk portion 31b is located outer side of the inner periphery side disk portion 31a in the axis line x direction.
  • the shape of the flange portion 31 is not limited to the above-described shape, and may be various shapes in accordance with an application target.
  • the flange portion 31 does not have to include the inner periphery side disk portion 31a and the connecting portion 31c, and the outer periphery side disk portion 31b may extend to the tubular portion 34 and may be connected to the tubular portion 34, and may be a portion in a hollow disk shape or a substantially hollow disk shape extending from the tubular portion 34 in the radial direction.
  • a lip contact portion 32 which is a portion where the slinger 3 contacts the end-face lip 21 is located on the outer side surface 31d which is a surface facing the outer side of the outer periphery side disk portion 31b at the flange portion 31. It is preferable that the outer side surface 31d is a surface along a plane expanding in the radial direction.
  • At least one shallow groove 33 is formed on the outer periphery surface 31d of the slinger 3.
  • a plurality of grooves 33 are formed on the outer periphery surface 31d of the slinger 3.
  • Fig. 3 is a side view of the slinger 3 in the sealing apparatus 1, seen from outside.
  • n grooves 33 of 33 1 , 33 2 , 33 3 , ..., 33 n are formed on the outer periphery surface 31d of the slinger 3. That is, the number of grooves 33 (number of threads) of the slinger 3 is n.
  • the number of grooves 33 (number of threads) of the slinger 3 is n.
  • the groove 33 m extends between the inner periphery side and the outer periphery side, and intersects with the lip contact portion 32 which is the contact portion with the end-face lip 21 on the outer side surface 31d of the outer side disk portion 31b of the flange portion 31.
  • a pitch which is an interval in the radial direction between the groove 33 m and the groove 33 m+1 which are adjacent to each other and which are different from each other is a pitch p.
  • the groove 33 m extends in a spiral manner (swirl shape), and a lead of the groove 33 m is a lead l.
  • the lead is a width which the groove 33 m expands in the radial direction when the groove 33 m goes around.
  • the groove 33 m is a groove which is concave inward, and, for example, a bottom surface 33a has outline in a v shape or substantially v shape.
  • a narrow angle of the bottom surface 33a is a narrow angle ⁇ .
  • a depth of the groove 33 m is a depth h, and a width in a circumferential direction of the groove 33m is a width w.
  • FIG. 5 is a partially enlarged cross-sectional diagram of the sealing apparatus 1 in the usage state where the sealing apparatus 1 is attached to the housing 50 as the attachment target and the shaft 52 inserted into the shaft hole 51 which is the through-hole formed at the housing 50.
  • the housing 50 is, for example, a front cover of an engine or a cylinder block and a crank case
  • the shaft hole 51 is a crank hole formed at the front cover, or the cylinder block and the crank case.
  • the shaft 52 is, for example, a crank shaft.
  • the sealing apparatus body 2 is fitted into the shaft hole 51 by being pressed into the shaft hole 51, and the slinger 3 is attached to the shaft 52 by being interference-fitted at the shaft 52. More specifically, the outer periphery side cylindrical portion 11a of the reinforcing ring 10 contacts the inner periphery surface 51a of the shaft hole 51, so that a shaft center of the sealing apparatus body 2 is made to match a shaft center of the shaft hole 51, and the gasket portion 26 is tightly adhered to the inner periphery surface 51a of the shaft hole 51 by the gasket portion 26 of the elastic body portion 20 being compressed in the radial direction between the inner periphery surface 51a of the shaft hole 51 and the inner periphery side cylindrical portion 11b of the reinforcing ring 10, so that sealing between the sealing apparatus body 2 and the shaft hole 51 is realized.
  • the cylindrical portion 35 of the slinger 3 is pressed into the shaft 52, and the inner periphery surface 35a of the cylindrical portion 35 is tightly adhered to the outer periphery surface 52a of the shaft 52, so that the slinger 3 is fixed at the shaft 52.
  • the plurality of grooves 33 formed at the outer periphery side disk portion 31b of the flange portion 31 of the slinger 3 provides pumping action in the case where the shaft 52 (slinger 3) rotates.
  • pumping action occurs in a region in the vicinity of the slinger contact portion 23 and the lip contact portion 32 in narrow space S which is space between the flange portion 31 and the end-face lip 21.
  • the target to be sealed oozes from the target to be sealed side to the narrow space S
  • the target to be sealed which has oozed is returned from the narrow space S to the target to be sealed side beyond the slinger contact portion 23 and the lip contact portion 32.
  • ooze of the target to be sealed to the narrow space S is suppressed.
  • the grooves 33 intersect with the lip contact portion 32 which is the portion where the end-face lip 21 contacts the slinger 3, between the inner periphery side and the outer periphery side, and a gap extending between the inner periphery side and the outer periphery side is formed by the grooves 33, between the slinger contact portion 23 and the lip contact portion 32 which contact with each other. Therefore, in a state where the sealing apparatus 1 is at rest, while the shaft 52 is at rest, that is, the slinger 3 is at rest, it is considered that static leakage in which the target to be sealed oozes from the target to be sealed side through the grooves 33 may occur.
  • the grooves 33 formed at the slinger 3 are shallow grooves as described above, and the depth h of the grooves 33 is a small value. Therefore, in the rest state of the sealing apparatus 1, occurrence of static leakage is prevented.
  • Sealing performance of the sealing apparatus 1 according to the embodiment of the present invention will be described next. Specifically, static leakage prevention performance of the sealing apparatus 1 will be described.
  • the present inventor manufactured the sealing apparatuses 1 according to the above-described embodiment of the present invention which have grooves 33 whose depths h, narrow angles ⁇ of bottom surfaces 33a, leads l and the number of threads n are different from each other (test examples 1 to 5) and performed evaluation tests of static leakage prevention performance of the sealing apparatuses 1.
  • the narrow angle ⁇ 165°.
  • the evaluation tests were performed by measuring a period until occurrence of leakage under the above-described test conditions was confirmed up to 1,000 hours. Further, the evaluation tests were performed at the evaluation apparatus in which a usage state as illustrated in Fig. 5 was created in a pseudo manner.
  • oil as the above-described target to be sealed was poured on the target to be sealed side, so that the whole of the sealing apparatus 1 was covered with the oil on the target to be sealed side.
  • the present inventor manufactured sealing apparatuses 1 according to the embodiment of the present invention including grooves 33 having respective depths h and the numbers of threads n (test examples 11 to 21) and performed evaluation tests of static leakage prevention performance of the sealing apparatuses 1 in a similar manner to the test examples 1 to 5 described above.
  • Test example 11 Test example 12
  • Test example 13 Test example 14
  • Test example 15 Test example 16
  • Test example 17 Test example 18
  • Test example 20 Test example 21
  • the number of threads n 4 4 24 43 4 24 65 4 99 73 24
  • Leakage occurrence period (hr) 24 45 34 110 No leakage 550 No leakage No leakage No leakage No leakage No leakage No leakage No leakage No leakage No leakage
  • the leakage occurrence period increased approximately three times of that in the test example 13.
  • the depth h of the grooves 33 of the slinger 3 is equal to or less than 15 ⁇ m.
  • the depth h of the grooves 33 of the slinger 3 is preferably equal to or less than 10 ⁇ m.
  • the above-described depth h of the grooves 33 is a maximum distance between the grooves 33 and a portion of the end-face lip 21 which covers the grooves 33. That is, in the case where the end-face lip 21 does not enter inside the grooves 33, the depth h of the grooves 33 is a depth of the grooves 33 itself. Meanwhile, in the case where the end-face lip 21 enters inside the grooves 33, for example, in the case where a tip 21a of the end-face lip 21 enters inside the grooves 33, the depth h of the grooves 33 is a maximum distance between a portion of the end-face lip 21 which enters inside the grooves 33 and the grooves 33.
  • the sealing apparatus 1 according to the embodiment of the preset invention, it is possible to prevent static leakage of the target to be sealed without increasing sliding resistance with respect to the shaft 52 (slinger 3).
  • the present invention is not limited to the above-described sealing apparatuses 1 according to the embodiments and may incorporate any aspect included in the concept of the present invention and the scope of the claims. Further, the respective components may be selectively combined as appropriate so as to provide at least part of the above-described problems and effects. Further, for example, the shapes, materials, arrangement, sizes, or the like, of the respective components in the above-described embodiments can be changed as appropriate in accordance with specific usage aspect of the present invention.
  • a shape of the grooves 33 of the slinger 3 is not limited to the shape in a spiral manner (swirl shape) illustrated in Fig. 4 as described above and may be other shapes.
  • the grooves 33 may be grooves which extend in a radial manner centered on or substantially centered on the axis line x from the inner periphery side toward the outer periphery side, or, as illustrated in Fig. 6B , may be grooves which extend while tilting in the circumferential direction.
  • shapes of the reinforcing ring 10 and the elastic body portion 20 are not limited to the shapes described above and may be other shapes.
  • the lip contact portion 32 which the end-face lip 21 contacts, and the grooves 33 are formed at the flange portion 31 of the slinger 3 attached to the shaft 52
  • the lip contact portion and the grooves of the present invention are not limited to those formed at the flange portion of the slinger. If the end-face lip and the grooves of the present invention can act as described above, any elements where the lip contact portion and the grooves of the present invention are formed, and any aspects and any structures of the lip contact portion and the grooves can be used.
  • the lip contact portion 32 and the grooves 33 may be formed at a brim portion 40 which is integrally provided at the shaft 52.
  • the brim portion 40 is a disk-shaped portion extending in the radial direction from the outer periphery surface 52a of the shaft 52, and has an outer side surface 40a which is a plane facing outside.
  • the outer side surface 40a of the brim portion 40 corresponds to the outer side surface 31d of the flange portion 31 of the above-described slinger 3, and the end-face lip 21 contacts the outer side surface 40a at the slinger contact portion 23, and the lip contact portion 32 and the grooves 33 are formed on the outer side surface 40a.
  • the outer periphery surface 52a of the shaft 52 corresponds to the outer periphery surface 35b of the cylindrical portion 35 of the above-described slinger 3, and the dust lip 28 contacts the outer periphery surface 52a of the shaft 52.
  • the dust lip 28 does not have to contact the outer periphery surface 52a of the shaft 52.
  • the lip contact portion 32 and the grooves 33 may be formed at a stepped portion 41 provided at the shaft 52.
  • the stepped portion 41 is a portion where steps are formed on the outer periphery surface 52a of the shaft 52, and has an outer side outer periphery surface 41a which is an outer side portion on the outer periphery surface 52a, an inner side outer periphery surface 41b which extends on an inner side from the outer side outer periphery surface 41a, and a stepped surface 41c connecting the outer side outer periphery surface 41a and the inner side outer periphery surface 41b.
  • the outer side outer periphery surface 41a and the inner side outer periphery surface 41b are cylindrical surfaces, and the inner side outer periphery surface 41b extends on the outer periphery side from the outer side outer periphery surface 41a.
  • the stepped surface 41c of the stepped portion 41 is a plane which is orthogonal or substantially orthogonal to the axis line x, and corresponds to the outer side surface 31d of the flange portion 31 of the above-described slinger 3, and the end-face lip 21 contacts the stepped surface 41c at the slinger contact portion 23, and the lip contact portion 32 and the grooves 33 are formed on the stepped surface 41c.
  • the outer side outer periphery surface 41a of the outer periphery surface 52a of the shaft 52 corresponds to the outer periphery surface 35b of the cylindrical portion 35 of the above-described slinger 3, and the dust lip 28 contacts the outer side outer periphery surface 41a of the shaft 52.
  • the dust lip 28 does not have to contact the outer side outer periphery surface 41a of the shaft 52.
  • the end-face lip of the present invention is not limited to one which contacts a surface extending in the radial direction as the end-face lip 21 described above.
  • the end-face lip of the present invention may be one which contacts a cylindrical surface extending in the axis line x direction from the outer periphery side or from the inner periphery side as illustrated in Fig. 9 .
  • the flange portion 31 of the slinger 3 may have an outer periphery side cylindrical portion 42 extending toward an outer side along the axis line x from the end portion on the outer periphery side of the outer periphery side disk portion 31b.
  • An inner periphery surface 42a which is a cylindrical surface is formed on a surface on the inner periphery side of the outer periphery side cylindrical portion 42, and this inner periphery surface 42a corresponds to the outer side surface 31d of the flange portion 31 of the above-described slinger 3, the end-face lip 21 contacts the inner periphery surface 42a at the slinger contact portion 23, and the lip contact portion 32 and the groove 33 are formed on the inner periphery surface 42a.
  • An outer periphery surface 42b which is a cylindrical surface formed on a surface on the outer periphery side of the outer periphery side cylindrical portion 42 may correspond to the outer side surface 31d of the flange portion 31 of the above-described slinger 3.
  • the end-face lip 21 contacts the outer periphery surface 42b at the slinger contact portion 23, and the lip contact portion 32 and the grooves 33 are formed on the outer periphery surface 42b.
  • the outer periphery side cylindrical portion 42 illustrated in Fig. 9 may be respectively formed at the brim portion 40 and the stepped portion 41 respectively illustrated in Fig. 7 and Fig. 8 . That is, the above-described inner periphery surface 42a or the outer periphery surface 42b may be respectively formed at the brim portion 40 and the stepped portion 41, and the lip contact portion 32 and the grooves 33 may be formed on the inner periphery surface 42a or the outer periphery surface 42b.
  • an extending direction of the end-face lip 21 at the elastic body portion 20 is different from that illustrated in Figs. 1 , 2 and 5 , and the end-face lip 21 extends while a diameter becomes smaller as progress from the outer side toward the inner side in the axis line x direction.
  • sealing apparatus 1 are applied to a crank hole of an engine
  • an application target of the sealing apparatus according to the present invention is not limited to this, and the present invention can be applied to all configurations which can utilize effects provided by the present invention, such as other vehicles, general-purpose machine and industrial machine.
  • the present invention can be used in a transmission, a reducer, a motor and a differential mechanism.

Claims (3)

  1. Dichtungsvorrichtung (1), die geeignet ist zum Abdichten eines ringförmigen Spalts zwischen einem Schaft und einem Loch, in das der Schaft eingesetzt werden soll, wobei die Dichtungsvorrichtung (1) umfasst:
    einen Dichtungsvorrichtungskörper (2), der geeignet ist, in das Loch eingepasst zu sein; und
    einen Schleuderring (3), der geeignet ist am Schaft befestigt zu sein,
    wobei der Dichtungsvorrichtungskörper (10) einen um eine Achsenlinie (x) ringförmigen Verstärkungsring (10) und einen elastischen Körperabschnitt (20) umfasst, der mit einem an dem Verstärkungsring (10) angebrachten elastischen Körper ausgebildet ist und der um die Achsenlinie (x) ringförmig ist,
    der Schleuderring (3) einen Flanschabschnitt (31) umfasst, der ein Abschnitt ist, der sich zu einer Außenumfangsseite erstreckt und ringförmig um die Achsenlinie (x) herum,
    der elastische Körperabschnitt (20) eine Endflächenlippe (21) aufweist, die eine Lippe ist, die sich zu einer Seite in einer Achsenlinie (x)-Richtung erstreckt und ringförmig um die Achsenlinie (x) herum, wobei die Endflächenlippe (21) in Verwendung eine Oberfläche (31d) des Flanschabschnitts (31) auf einer anderen Seite in der Achsenlinie (x)-Richtung berührt,
    mindestens eine flache Rille (33) an der Oberfläche (31d) des Flanschabschnitts (31) des Schleuderrings (3) auf der anderen Seite ausgebildet ist und
    dadurch gekennzeichnet, dass eine Tiefe (h) jeder der mindestens einen Rille (33) gleich oder kleiner als 15 µm beträgt.
  2. Dichtvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Tiefe (h) jeder der mindestens einen Rille (33) gleich oder kleiner als 10 µm beträgt.
  3. Dichtungsvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass sich die Rille (33) mit einem Abschnitt (32) schneidet, an dem die Endflächenlippe (21) in Kontakt steht.
EP18809887.5A 2017-06-02 2018-06-01 Dichtungsvorrichtung Active EP3633245B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2017109912 2017-06-02
PCT/JP2018/021193 WO2018221727A1 (ja) 2017-06-02 2018-06-01 密封装置

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EP3633245A1 EP3633245A1 (de) 2020-04-08
EP3633245A4 EP3633245A4 (de) 2021-01-20
EP3633245B1 true EP3633245B1 (de) 2022-04-20

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DE102017220989A1 (de) * 2017-11-23 2018-11-29 Zf Friedrichshafen Ag Ölführungsanordnung für ein Getriebegehäuse
EP3875808A4 (de) * 2018-10-31 2022-08-03 Nok Corporation Verfahren zur oberflächenbehandlung eines scheibenelements einer abdichtungsvorrichtung und abdichtungsvorrichtung
DE102020209677A1 (de) * 2020-07-31 2022-02-03 Aktiebolaget Skf Lageranordnung
CN112343924A (zh) * 2020-10-29 2021-02-09 广州市昊志机电股份有限公司 一种主轴接触式密封结构、主轴和机床

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160169393A1 (en) * 2014-12-10 2016-06-16 BRUSS Sealing Systems GmbH Axial Shaft Seal

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56153155A (en) * 1980-04-30 1981-11-27 Akira Washida Oil seal
JPH0754695Y2 (ja) 1990-03-28 1995-12-18 エヌオーケー株式会社 端面接触型密封装置
JP3036015B2 (ja) 1990-07-31 2000-04-24 ソニー株式会社 ビデオテープレコーダ
DE19721692C2 (de) * 1997-05-23 2000-02-24 Freudenberg Carl Fa Dichtungsanordnung
US9638324B2 (en) * 2012-07-30 2017-05-02 Nok Corporation Sealing device
JP5964201B2 (ja) 2012-10-23 2016-08-03 Nok株式会社 オイルシール
EP2749796B1 (de) * 2012-12-28 2015-11-25 Carl Freudenberg KG Dichtungsvorrichtung
CN107687516A (zh) 2014-06-10 2018-02-13 Nok株式会社 密封装置
WO2016111303A1 (ja) 2015-01-08 2016-07-14 Nok株式会社 密封装置
JP6033996B1 (ja) 2015-04-02 2016-11-30 Nok株式会社 密封装置
JPWO2017090583A1 (ja) * 2015-11-24 2018-08-16 Nok株式会社 密封装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160169393A1 (en) * 2014-12-10 2016-06-16 BRUSS Sealing Systems GmbH Axial Shaft Seal

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JPWO2018221727A1 (ja) 2020-04-02
US11215284B2 (en) 2022-01-04
CN110709632B (zh) 2022-05-06
CN110709632A (zh) 2020-01-17
EP3633245A1 (de) 2020-04-08
EP3633245A4 (de) 2021-01-20
WO2018221727A1 (ja) 2018-12-06
JP7203723B2 (ja) 2023-01-13
US20200096112A1 (en) 2020-03-26

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